多極化合成孔徑雷達(dá)數(shù)據(jù)偽彩色合成處理
A FALSE COLOR SYNTHETIC PROCESSING FOR POLARIMETRIC SAR DATA
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摘要: 本文研究了利用多極化合成孔徑雷達(dá)(SAR)數(shù)據(jù)產(chǎn)生極化偽彩色合成圖的方法,提出了用M11歸一化后得到的Stokes矩陣來產(chǎn)生目標(biāo)的極化合成孔徑雷達(dá)偽彩色圖的新方法。由于它消除了目標(biāo)總功率大小對(duì)圖像色彩的影響,因而可以分析場景回波功率太強(qiáng)或太弱目標(biāo)與極化特征圖具有相同形狀的目標(biāo)。另外,還提出用極化特征圖方法求出三種極化組合,使兩類目標(biāo)的回波功率相差達(dá)到最大,再合成處理成極化合成孔徑雷達(dá)偽彩色合成圖的方法。
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關(guān)鍵詞:
- 極化合成孔徑雷達(dá); Stokes矩陣; 極化特征圖; 偽彩色合成
Abstract: This paper studies on the false color synthetic processing for polarimetric SAR data. A new method to get false color image of polarimetric SAR data with the unitary Stokes matrix is presented. Because this method discards the information of total power, it can be used to analyze the target with more power or less power and the target with the same shape in polarization signatures. The paper also presents the way to find three optimum polarization s combinations to enhance the contrast between two types of scatters with polarization signature and use the polarization synthesis to get false color image of polarimetric SAR data. -
許殿元,丁樹柏.遙感圖像信息處理,北京:宇航出版社,1990,12,32-45[2]Ulaby F T, Elachi C. Radar Polarimetry for Geoscience Application, MA: Artech House INC.,1990, 4-32.[3] The transmission and reception of elliptically polarized waves, Proc. .[J].IRE..1950, 38:148-[4]Van Zyl J J, Zebker A, Elachi C. Imaging radar polarization signatures: Theory and observation[J].Radio Science.1987, 22(4):529-543[5]Diane L. Radar polarimetry: Analysis tools and applications. IEEE Trans. on Geoscience and Remote Sensing, 1988, GRS-26(6): 774-789. -
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